The Royal Canadian Air Force officially comes into existence. Its first director is Wing Commander W.G. Barker, a Victoria Cross recipient.
Canadian navy ships Iroquois (2nd) and Fredericton (2nd) arrive in the Arabian Gulf. They join HMCS Regina as part of a U.S.-led task force involved in maritime surveillance.
The intensive phase begins for the preliminary bombardment for the assault on Vimy Ridge in France. For seven days German positions are subject to more than a million artillery rounds. The bombardment not only smashes German defences, but prevents food, water and supplies from reaching the front.
In Korea, divisions of the Eight Army cross the 38th Parallel.
A severe tornado hits Windsor, Ont., killing nine ...